On Sun, Jan 31, 2021 at 09:53:27AM +1100, Peter Ross wrote: > On Sat, Jan 30, 2021 at 04:00:20PM +0100, Michael Niedermayer wrote: > > Fixes: Timeout > > Fixes: > > 29226/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_THEORA_fuzzer-6195092572471296 > > > > Found-by: continuous fuzzing process > > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > > --- > > libavcodec/vp3.c | 3 +++ > > 1 file changed, 3 insertions(+) > > > > diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c > > index 2a1da6b062..57c6eb1ff9 100644 > > --- a/libavcodec/vp3.c > > +++ b/libavcodec/vp3.c > > @@ -2875,6 +2875,9 @@ static int theora_decode_header(AVCodecContext > > *avctx, GetBitContext *gb) > > int ret; > > AVRational fps, aspect; > > > > + if (get_bits_left(gb) < 206) > > + return AVERROR_INVALIDDATA; > > + > > s->theora_header = 0; > > s->theora = get_bits(gb, 24); > > av_log(avctx, AV_LOG_DEBUG, "Theora bitstream version %X\n", > > s->theora); > > -- > > 2.17.1 > > ok
will apply thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Awnsering whenever a program halts or runs forever is On a turing machine, in general impossible (turings halting problem). On any real computer, always possible as a real computer has a finite number of states N, and will either halt in less than N cycles or never halt.
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